Vintage Stephen Dweck Triple Strand Necklace with Colors of Turquoise, Polished Onyx, Carved blue turquoise/black agate/ lava stone . Sterling Silver Finding and Closure. Excellent Vintage Condition. The shortest strand is 15" in length and longest Strand is 19.5" in length. A Substantial Necklace weighing 300 grams. Marked on the back of the Closure with:(C) 'Stephen Dweck' 'Sterling'. Please email me with any questions as I do not accept returns.